JIG: Do you like numbers and loops? Of course you do! You're only human. Conceptis, the team who brought pencil puzzles like Link-A-Pix and Nurikabe to the web, are continuing their trend of porting their browser puzzles to the iOS platform, trading in the scratch of a pencil or the click of a mouse for the tap of a finger. Their latest App Store addition is Conceptis Slitherlink, a mobile iteration of their loopy logic puzzle Slitherlink Light.